Scale of Harness Kit -  (with Diamond)                    

 Mohs Scale with 10  key minerals.  Since diamond is the hardest it is given the number 10. Kit includes : Talc   2. Gypsum   3. Calcite  4. Fluorite   5. Apatite    6. Feldspar    7. Quartz  8. Beryl    9. Corundum    10. Diamond. 

This kit is 100% Asbestos free